"...I considered painting as a means of expression , not an end in itself. One means of expression among others, and not and not a complete end for life at all; in the same way I consider that color is only a means of expression in painting and not an end. In other words, painting should not be exclusively retinal or visual; it should have to do with the grey matter, with our urge for understanding. This is generally what I love. I don't want to pin myself down to one little circle, and I tried at least to be as universal as I could."
From interview 1956